Hardware Spec Index

Novexa HD-6421 Ultra 20TB 7,200 RPM CMR Enterprise Hard Drive

Hard Drives · Novexa · SKU HD6421-ULTRA · Released 2021 · Updated 2026-10-22

Key facts

Benchmark index2,934 (Hard Drives scale)
Category rank#40,317
Street price$589
Power8 W
Performance per dollar4.98
Released2021

Specifications

BrandNovexa
ModelNovexa HD-6421 Ultra
Capacity20 TB
ClassEnterprise
RecordingCMR (conventional magnetic recording)
Spindle speed7,200 RPM
Cache512 MB
InterfaceSATA 6 Gb/s
Sustained transfer280 MB/s
Workload rating550 TB/year
MTBF2.5 million hours
Helium-filledYes
Warranty5 years

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Cite this page: Hardware Spec Index, “Novexa HD-6421 Ultra 20TB 7,200 RPM CMR Enterprise Hard Drive”, https://vextor7.com/item/63258398 (accessed 2026-10-22).